How do I proceed with the sum? Please help on how to proceed!

@ tejaswini 
its a question from electromagnetic induction . 
in the first part of the question its asking abt finding the current . 
and acc to the formula 
the current (i ) = induced emf (e ) / r (resistance ) 
resi. is already given to you , u need to calculate the induced emf . 
that can be calculated by the following formula 
e = blv sin theta 
where , b = magnitude of magnetic field . 
v – velocity of loop as its moving 
l = length of loop . 
theta – angle subtend by the loop and the magnetic field . 
remember in all of the above value , u need to take rhombous case . 
and after that the direction of current , 
it can be calculated by the lenzes law , it says . 
the direction of current is always opposite to the induced emf direction , else u can use flemigs left hand thumb rule also . 
HOPE U CAN NOW DO THE QUES 
IF NOT , THEN LET ME KNOW . I WILL SOLE IT FURTHER . 

ALL THE BEST ..